3.ELECTROMECHANICAL energy conversion systems with pulse width modulation (PWM) or other types of pulse control are widely used in human practice. The most important part of such systems is either concerned with conversion of large energy flows or used with responsible technological processes. The complicated internal structures of such systems, together with the essential nonlinearities, stipulate the possibility of sub-harmonic and aperiodic oscillation to the PWM synchronizing impact stipulates substantial distortion of the quality of energy being converted and may even lead to emergencies . Appearance in the dynamics (Fig. 1).The appearance of such undesirable oscillations that are sub-harmonic or aperiodic with respect PWM synchronizing impact stipulates substantial distortion of the quality of energy being converted and may even lead to emergencies.

4. There are well-known papers dealing with both theoretic and experimental modelling of different aspects in the electromechanical pulse energy conversion system (PECS) dynamics . However, the experimental data in may only claim a qualitative correspondence to the theoretical results presented. Experimental plants used in probably are intended to be used with an oscilloscope to observe some PECS output variables with any fixed set of parameters and could not realize experimental parametric dynamics analysis, e.g., to monitor stationary-mode stability loss boundary (bifurcation boundary) in the parameter space, etc.